Geojson has Karlsruhe bike lanes built or defined since 1980 (big gap from 1980 to 2007).
Create map video with evolution of lanes.
- Fixed: OSM Contributors copyright text hidden by info text
- Number of tracks and total length suspicious. Check with data provider
- Removing duplicates (geometry based) helps, but maybe not sufficient
- According to Nachaltigkeitsbericht the total length is 531km in 2020. In 2012 a bulk update of the database occured, which explains the jump in length in that year. Result seems to be in-line with the official values.